You can measure it, but you can't calculate it. That's why the resistance of a
resistor is always printed on it, either in numbers or in color bands. Without that
marking, the resistor is pretty useless. If it accidentally missed being marked
during manufacture, it would be either discarded, or sold surplus for bubkes.
Resistance (Ohms) = Potential Difference (Voltage) / Current (Amps)
footing resistance is that resistance which could not harm human body while touching tower...and it is calculated by earth resistance tester
A meter bridge is used to measure an unknown electrical resistance by comparing it with a known resistance. It works on the principle of Wheatstone bridge. By balancing the bridge circuit, the value of the unknown resistance can be calculated accurately.
You have to measure the voltage, and the current. The resistance is then calculated by using Ohm's Law.
what is the diference betwean calculated and maesured value
Resistance can be calculated using Ohm's Law, which states that resistance (R) is equal to the voltage (V) across a component divided by the current (I) flowing through it: ( R = \frac{V}{I} ). Additionally, in a circuit with multiple resistors, total resistance can be calculated using series and parallel formulas. For resistors in series, the total resistance is the sum of individual resistances, while for resistors in parallel, the total resistance can be found using the formula ( \frac{1}{R_{total}} = \frac{1}{R_1} + \frac{1}{R_2} + \ldots ).
without knowing resistance this cannot be calculated
Yes, there may be differences between measured and calculated values of resistance. Measured resistance is obtained through direct measurement using a multimeter or other relevant instruments, while calculated resistance is determined using Ohm's Law based on the circuit components. Factors such as temperature, component tolerances, and measurement errors can lead to discrepancies between the two values.
The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance.The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance.The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance.The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance.
2.567 ohms Calculated using: http://www.cirris.com/learning-center/calculators/133-wire-resistance-calculator-table
Your hair dryer has a resistance of 220/12 = Ohms. (I'm sure you can do the math.)
ohms law calculation for a series circuit - Total Resistance = Total Voltage divided by Total Current